[nsp] 7200-NPEG1 Overruns + drops

[Mark]

Good morning!

            I have a problem with a Cisco 7204 VXR (NPE-G1) router. It´s running IOS 12.2(15)B. It´s working as an LNS ending two tunnels. When the traffic through the GigabitEthernet Interface reaches 130 Mbps aprox, one of the tunnels (the one with more sessions) comes down´.
This is the show interface output:

GigabitEthernet0/3 is up, line protocol is up 
  Hardware is BCM1250 Internal MAC, address is 0004.de2e.3819 (bia 0004.de2e.3819)
  
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, 
     reliability 255/255, txload 34/255, rxload 20/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, link type is force-up, media type is SX
  output flow-control is off, input flow-control is off
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:24, output 00:00:00, output hang never
  Last clearing of "show interface" counters 00:36:34
  Input queue: 0/4000/74/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 81938000 bits/sec, 29850 packets/sec
  5 minute output rate 136447000 bits/sec, 31874 packets/sec
     64572680 packets input, 1053557529 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 132 overrun, 0 ignored
     0 watchdog, 1273 multicast, 0 pause input
     0 input packets with dribble condition detected
     68879736 packets output, 2645118682 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out


As you can see there are Overruns and Input drops. I think this equipment should manage more than 130 Mbps. I have change the Interface but nothing changed.
Hope you can help me!

Regards,

Steve